/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to you under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.phoenix.compat.hbase;

import java.io.IOException;

import org.apache.hadoop.hbase.ipc.CallRunner;
import org.apache.hadoop.hbase.ipc.RpcScheduler;

/**
 * {@link RpcScheduler} that first checks to see if this is an index or metadata update before
 * passing off the call to the delegate {@link RpcScheduler}.
 */
public abstract class CompatPhoenixRpcScheduler extends RpcScheduler {
    protected RpcScheduler delegate;

    @Override
    public boolean dispatch(CallRunner task) {
        try {
            return compatDispatch(task);
        } catch (Exception e) {
            //This never happens with Hbase 2.5
            throw new RuntimeException(e);
        }
    }

    public int getActiveRpcHandlerCount() {
        return delegate.getActiveRpcHandlerCount();
    }

    @Override
    public int getActiveBulkLoadRpcHandlerCount() {
        return delegate.getActiveBulkLoadRpcHandlerCount();
    }

    @Override
    public int getBulkLoadQueueLength() {
        return delegate.getBulkLoadQueueLength();
    }

    public abstract boolean compatDispatch(CallRunner task)
            throws IOException, InterruptedException;
}
